Plier type wrench



Sept. 26, 1944. V J HAHN 2,358,858

PLIER TYPE WRENCH Filed Aug. 27, 1943 2 Sheets-Sheet l efoez flak)?uvmvrox.

Filed Aug. 27, 1943' 2 Sheets-Sheet 2 all/ INVENTOR.

ATTORNEYS.

Patented Sept. 26, 1944 UNITED STATES PATENT I OFFICE PLIE-R TYPE WRENCHJoel. Hahn, Beatrice, Nebr. Application August 27, 1943, Serial No.500,267

3 Claims. (01. 81-85) This invention relates to quick-acting plier typewrenches, and aims to provide means whereby the movable jaw ofquick-acting plier type wrenches may be secured in various positions ofadjustment, to vary the capacity of the wrench for use in workingnuts'or bolts of various sizes.

Another objectof the invention is to provide a movable pivot pin orfulcrum for the movable jaw, which may be readily and easily moved oradjusted to vary the movement of the movable jaw of the wrench, to theend that the operation of the pivot pin or fulcrum may be accomplishedwith the thumb and index finger of the hand, without removing the handfrom the wrench handle.

Another object of the invention is to provide a wrench of this characterwherein the rear edge of the movable jaw may be used as a wire-cuttingimplement.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claims, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed. 7

Referring to the drawings Figure 1 is an elevational view of a wrenchconstructed in accordance with the invention.

Figure 2 is anedge elevational view thereof.

Figure 3 is a sectional view taken on line,3-3 of Fig. 1.

Figure 4 is a sectional view taken on line 4-4 of Fig. 1.

Figure 5 is an elevational view disclosing the opposite side of thewrench. i

Figure 6 is a fragmental sectional view through the movable jaw andhandle used in operating the movable jaw of the wrench.

Figure"? is a sectional view taken on line 1-1 of Fig. 5.

Figure 8 is a sectional view similar to Figure '7, illustrating thepivot pin or fulcrum of the movable jaw as moved to its inactiveposition.

Figure 9 is a perspective view of the movable pivot pin of the wrench.

Referring to the drawings in detail, the reference character 5designates the shank of the stationary jaw, whichis formed into a handle6, the free end thereof being flattened, providing a screw-driver l.

The reference character 8 designates the jaw that is formed integralwiththe shank'5 and constitutes the stationary jaw of the wrench.

The movable jaw is indicated by the reference character 9 and includesthe yoke l0 that slides over the shank 5,'as clearly shown by thedrawings. One edge of the yoke lllis beveled as at I I providing a knifefor cutting wires or the like, held in the groove l2 and'whichis formedat the rear of the shank 5, adjacent to the jaw 8..

Extending from the shank of the movable jaw,

is the extension I3 which is formed with an elongated opening l4designed to receive the long end l5 of the substantially U-shaped pivotpin IS. The short end I! of the U-shaped pivot pin is designed to extendthrough openings of the lever [B which fits over the shank ofthestationary jaw.

A line of openings I9 are formed in the stationary jaw shank, and areadapted to aline with the openings of the lever l8 to receive the U-shaped pivot pin.

It will of course be understood that when the lever I8 is moved toactuate the movable jaw of the wrench, pressure is brought to bear onthe long end [5, and to reduce friction at this point, a sleeve 20 isprovided on the long end of the U-shaped pivot pin, as clearly shown byFig. 6. This sleeve will permit a rolling action of the pivot betweenthe lever and movable jaw 9.

In order that the adjustment of the U-shaped pivot pin may be accuratelyand rapidly made, marks indicated at 2| are formed on the sides of theshank of the stationary jaw. These marks indicate the point where themovable jaw should be moved in order for the openings of the shank 5 andlever I8 to be accurately aligned to receive the U-shaped pivot pin.

One edge of the long end l5 of the U-shaped pivot pin, is formed withrecesses, the bottoms of the recesses being inclined towards the center.The recesses are designed to receive the wire 22, which is secured tothe outer surface of the lever I8 and tensioned by the screw 23 which issecured in the lever l8. One end of the wire 22 is shown as resting inthe notches to exert pressure on the U-shaped pivot pinand restrictmovement thereof, under normal conditions.

From the foregoing it will be seen that when it is desired to adjust thewrench, it is only necessary to press the long end of the U-shaped pinthrough the openings of the lever and shank of the stationary jaw, fromthe position shown by Fig. 7 of the drawings to the position shown byFig. 8. The movable jaw may now be slid' to the proper position. Afterthe adjustment has been made, the U-shaped pin as shown by Fig. 8, isforced to the position as shown by Fig. '7, whereupon the jaws areproperly positioned for use.

What is claimed is:

1. A quick-acting plier type wrench comprising a stationary jawincluding a shank and a handle, said shank having a plurality ofopenings formed therein, a movable jaw including a yoke, slidable oversaid shank, an extension on the movable jaw, having an elongatedopening, a lever having openings adapted to aline with the openings inthe shank of the stationary jaw, said lever having openings adapted toaline with the elongated opening in the extension, a

substantially U-shaped pivot pin having a sub- I stantially long end anda short end, said long 'Plurality of pivot pin openings, a movable jaw,

means for slidably mounting the movable jaw on theshank ofjthestationary jaw, an extension forming apart, of themovable jaw and havingan elongated opening, an operating lever. having openings for, alignmentwith said elongated opening andf additional openings for alignment witha pivot pin opening, a sleeve in said elongated opening of the movablejaw, a U-shaped pivot pin, one leg of the pivot pin being extendedthrough the aligning openings of the sleeve, movable jaw and lever, theother leg of the U-shaped pivot pin being extended through the alignedopenings of the lever and a pivot pin opening of the shank of thestationary jaw, and a yieldable member mounted on the lever andadapted'to bear against the U-shaped pivot pin whereby said pivot pin isnormally held against movement.

3. A quick-acting plier type wrench, comprising a stationary jawincluding a shank having a line of openings formed therein, a leverhaving openings adapted to align with the openings of the shank, amovable jaw mounted for sliding movement on the shank of the stationaryjaw, said movable jaw having an elongated opening,

'said lever having openings adapted to align with the elongated opening,a substantially U-shaped pivot pin, one leg of said pivot pinbeingpositioned-in registering openings of the lever and shank, pivotallyconnecting the lever and shank, the other leg of the pivot pin beingpositioned in-openingsofthe lever aligning with the elongated opening ofthe movable jaw, pivotally connecting the lever and movable jaw, saidother leg. having a pair of recesses, said pivot pin being transverselymovable relative to the lever, and a spring adapted to engage in eitherrecess, normally holding said pin in its positions of adjustment.

JOEL HAHN.

